[SOLVED] I5-8600K - High temperatures even in default setup, cooling system not assembled correctly?

Natan_2

Commendable
Feb 12, 2017
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Hi,
First of all - i apologize for any grammatical mistakes, as english isn't my native langauge. Secondly, this thread gonna be pretty ''complex'' because i tried many things, and i want to give you as much details as possible. So let's get started.
List of components:


  • Intel I5-8600K
    MSI Z37-A-PRO
    Be quiet! Pure Rock 1500RPM CPU Fan
    2x System Fan 1000 +/- 200RPM by Cooler Master
    Cooler Master E500L Case
So, the problem is - my temperatures are pretty much high, way to high even in default mode (around 55 C in idle, 75-86 in games). The temperatures are pretty much the same even though i'm running 3,6GHz on 1,24V, but it was the same while I overclocked it to 4,8GHz on 2,9 - 1,35V. It is pretty high, so i think there's are some possible problems:

- CPU Fan fail to get to maximum speed (during stability test in AIDA, it was at around 1k RPM)
- CPU system is not assembled correctly - my friend told my, that my CPU fan (PC was assembled by shop montage service btw) is reversed, and that my FAN from the back panel should put the air outside, and now it is putting it to the inside, pics -> https://i.imgur.com/lslAZW6.jpg // https://i.imgur.com/A7gwEgW.jpg
- I want to buy a thermal paste (Cooler Master MasterGel and put it myself, and I also want to buy 3 addition system fans) - and there's the thing. There's one fan on the back panel(120mm), one on front panel (120mm).
I want to put the front panel Fan above the CPU, like on the image http://assets.coolermaster.com/products/masterbox-e500l/img/c5.png there is around 3,5 cm space to put the fan, whilst the fan is 2,5 cm itself and add another one - it makes 3 fans (1 back panel, 2 above CPU) slot out of 4. Fourt 140mm fan on the front panel, and... as i don't have watercooling and don't have money to buy one, i would like to go with another 140mm fan plugged into PUMP connector - i heard it works, but the fan will be always on 100%, right? I mean, that should really put the temperatures down.

Thank's a lot for help! I know it's a long thread, but like i said, i tried everything, and i ran pretty much out of ideas...

Have a nice day!
 

ZRace

Commendable
May 12, 2017
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Whatever you do with your case fans, try to keep the number of fans taking air in/out balanced. E.g. 2 fans in, 2 fans out.

More outtake than intake fans will make the system more silent, but hotter. More intake fans will make the system louder, but cooler. Of course, 1 intake/2 outtake is still better than 1 intake/1 outtake, 2 intake/1 outtake would be cooler than both (but also louder).

In your case, the best config of all would be 3 intake, 3 outtake fans.

As for CPU temps: Reapplying thermal paste isn't a bad idea. When you do that, also make sure the CPU heatsink sits tight on the CPU (but don't apply excessive force either). Perhaps the heatsink isn't pressed on the CPU well enough and doesn't make full contact.
 

ZRace

Commendable
May 12, 2017
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Fans at the top and rear should normally push air out, fans at the front, bottom or side panels should pull air in.
 

indsup

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Apr 26, 2015
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Check and make sure the cpu cooler is still mounted securely. Check the mounting bolts and make sure they are all still tight. Your temps are a bit high, but not on the dangerous side of things. What software are you using to measure the temps? It could be an issue with the software also. Not all of them read correctly. Version will make a difference as well. Check your fan profile and make sure it is on something that isn't quiet mode or something like that.

If you add fans always remember to balance the in with the out. It's all about flow.
 

Natan_2

Commendable
Feb 12, 2017
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In this case i'll could only make it 3/2 out take - back and top 120mm pulling air out, front 2x140mm pulling air in. Is it good, or better 2/2 for equality?
I will dissasemble it, and see, maybe they left the foil on the cooling, or didn't even put the termal paste...

Thx for answers,I'l really thankful
 

genca

Notable
Dec 5, 2017
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Type on google Cooler Master E500L Case airflow and go to pictures and see how shoudl air go. I would post picture here in answer but i dont know how to do that
Edit: do you have thermal paste on your cpu right now and are you sure you have mounted your cooler properely?
 

Natan_2

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Feb 12, 2017
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I used MSI Afterburner in game test, and CPUTemp for idle temp, aswell as AIDA64
 

ZRace

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May 12, 2017
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2 in/3 out would be marginally better than 2 in/2 out, but I'd say it's not really worth the 10 bucks for one more fan. If it's for looks, you can go for it though.
 

Natan_2

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Feb 12, 2017
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Got it.
It was the service of french shop (LDLC.com) that assembled my pc. I can not believe it is possible to not put thermal paste while building a PC, but i'll check it soon.
 

genca

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Dec 5, 2017
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Well, in my country it is not rare for shops to not put thermal paste when they are building pc, but im living in banana country. That is why i ask.
 

Natan_2

Commendable
Feb 12, 2017
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Update:
They did put a thermal paste, pics: https://i.imgur.com/ms0Nizn.jpg / https://i.imgur.com/CNy8Z0F.jpg
However, i bought a Cooler Master Master Gel thermal paste, i will clear the old one and put this one when it arrives, and i also bought 1x120mm fan and 2x 140mm (arctic f12/f14).
But... the thing that bothers me a lot, is why CPU FAN is only on 700RPM while CPU is 55-50 celsius - is it normal? Because i really don' think so.

/Edit: Aida64 Extreme Stability Test - Temperatures & RPM
https://i.imgur.com/cwJR0op.jpg
 

ZRace

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May 12, 2017
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Is the CPU fan plugged into the CPU_FAN header on the mainboard? (name of the header might very slightly)

In the BIOS/UEFI, what fan curve or fan profile is set? Maybe it's set to something like "silent". You could also get a software like Speedfan (or software from MSI, if they offer any for your board) to manually adjust the fan speed in Windows and then see whether it makes a difference
 

Natan_2

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Feb 12, 2017
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Yeah it is, anyway i found it - in the BIOS i put FAN at 100% and CPU temperature is 45-39, which i think is ok.
BIOS fan curve looks like that: https://i.imgur.com/Qda5Y8X.jpg // https://i.imgur.com/cAV35ly.jpg

I try speedfan since several hours, but it does not detect my fans, i'l give a try and look for some MSI software, to see if it works properly.
 

Natan_2

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Feb 12, 2017
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Now it's even hotter, and, as you can see, fans are at max speed:
https://i.imgur.com/C3bsG4C.jpg

I recognize there is something wrong but i have absolutely no idea what.
 

ZRace

Commendable
May 12, 2017
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Uhm, did you put the cooler back on with the "old" thermal paste after checking it? If yes, then it's no surprise, as then there are probably some air bubbles enclosed within that paste from when you put it back on. Air transfers heat horribly, and thus the temps would rise.
 

Natan_2

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Feb 12, 2017
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Then it is because of my stupidity, yeah i did.
Sorry, i haven't had a PC (laptops for 6 last years) and i'm pretty much lost.
So we could see the ''true'' temperatures when the new thermal paste arrives yeah? I live in pretty small city, and had to buy thermal paste through internet.
 

ZRace

Commendable
May 12, 2017
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Yes. Follow this procedure when changing the thermal paste:

Clean both the heatsink and the CPU with a towel or paper dipped in alcohol. Make sure both surfaces are perfectly clean for best results. (Also, don't put your hands on these surfaces after cleaning them)

After that, apply the thermal paste to one of the two surfaces in your preferred way. Some make a blob in the middle and let it distribute itself when pushing heatsink and CPU together. Some distribute it themselves with e.g. a credit card. I personally prefer just making a reasonably-sized blob in the middle :)

Then put the cooler and CPU together and tighten the mounting mechanism of your cooler well. Try not to readjust the position of the cooler or worse, lift it again after putting them together.

Done!

Edit: Better use too much thermal paste rather than too little. Going overboard is still better than being greedy. The paste should cover at least 85-90% of the CPU after distribution in a thin film
 

Natan_2

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Feb 12, 2017
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I did not change the paste or install 3 others fans yet, but there is something i found, and i think is very strange.

In CoreTemp (application for measuring temperatures on CPU) i see that the cores are at 100% load all the time, even in idle (task manager shows only 7%). I wonder if i didn't leave some function that force cpu to be on 100% all the time in OC menu in BIOS (MSI).

https://i.imgur.com/IJkP22d.jpg
 

genca

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Dec 5, 2017
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I would gladly help you, but i'm pretty sure that i cant. Something strange in this photo for me.5 of 6 cores are at 100% and power usage of cpu is just 38.6w. Is that suspicious just to me, or intel just made a perfect cpu? And why is this showing wrong info Platform: 1151(h4). Dont you use z370 or that is how it should be(maybe this is stupid question, dont blame me)
 

Natan_2

Commendable
Feb 12, 2017
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It is how it is supposed to be i guess, chipset is Z370 and socket is a LGA-1151.

For temps&use, everything shows a bit different in idle:

Aida 64: https://i.imgur.com/bAdegHD.jpg // https://i.imgur.com/anX1Anx.jpg
Open hardware monitor: https://i.imgur.com/VlkxRqN.jpg
CPuTemp: https://i.imgur.com/IJkP22d.jpg

I wonder why 5 first cores are at 100%, and last one only on 3% load. It is certainly not how it is supposed to be

And now it showed ''that'' for one minute -> https://i.imgur.com/bCvtjk4.jpg

What is going on...

Should I reset bios and oc by pulling out the cmos battery? maybe it is related to oc that was done before (now it is not overclocked).
 

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